Face mask base fabric and its manufacturing method

Abstract

To provide a face mask base cloth facilitating appropriate lift-up along a face line.SOLUTION: A face mask base cloth comprises a nonwoven fabric in which cotton fiber groups are unevenly distributed on a surface, and crimped fiber groups are unevenly distributed on a rear surface. The cotton fiber groups are substantially aligned in the vertical direction of the face, and the crimped fiber groups are randomly aligned. Due to that the cotton fiber groups, the crimped fiber groups, and the cotton fiber groups and the crimped fiber groups are entangled each other, the face mask base cloth is highly elongated in the width direction of the face compared to the vertical direction of the face. The face mask base cloth is obtained by the following method. The method includes accumulating the cotton fiber groups substantially aligned in a machine direction to form cotton fiber webs, accumulating the randomly aligned crimped fiber groups to form crimped fiber webs, and applying a high-pressure water stream to laminated webs obtained by laminating the cotton fiber webs and the crimped fiber webs.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a face mask base fabric for use as a cosmetic face mask, and in particular to a face mask base fabric suitable for achieving a neat face line. [Background technology]

[0002] Conventionally, nonwoven fabrics have been used as the base fabric material for cosmetic face masks. The nonwoven fabrics are punched into various shapes and used as the base fabric for face masks. The base fabric for face masks has various shapes, such as a shape covering the entire face, a shape covering the under-chin and the entire face, a shape covering only the under-chin and the chin, a shape covering only the under-chin, a shape covering only the chin, a shape covering only the eyes, and a shape covering the under-nose and the mouth. The base fabric for face masks is impregnated with a cosmetic agent containing beauty ingredients such as moisturizing ingredients, cleansing ingredients, or whitening ingredients to make a face mask, which is then applied to the face to improve the beauty of the skin.

[0003] In recent years, face masks are required to have not only a function for improving the beauty of the facial skin, but also a function for lifting the facial skin. The lifting function is to pull up the skin from the chin to the cheeks upward to make the fence line neater, since the face line, which is the outline of the face from the chin to the temples, also sags due to sagging cheek skin. For this reason, it has been proposed to impart elasticity to the face mask base fabric.

[0004] For example, Patent Document 1 proposes a face mask base fabric including a nonwoven fabric (specifically, a meltblown nonwoven fabric) made by accumulating fibers formed from a thermoplastic elastomer. However, if the fibers themselves are made of a thermoplastic elastomer, the elasticity becomes excessive, and the lifted skin tends to gradually return to its original shape. In addition, in the case of a meltblown nonwoven fabric, since the constituent fibers are randomly arranged, there is no directionality in the elasticity and extensibility, making it difficult to lift up along the face line.

[0005] [Patent Document 1] Patent No. 5324403 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a face mask base fabric that is easy to lift up appropriately along the face line. [Means for solving the problem]

[0007] The present invention solves the above problems by improving the fiber form and fiber arrangement without using fibers formed from a thermoplastic elastomer. That is, the present invention relates to a face mask base fabric made of a nonwoven fabric having cotton fiber groups unevenly distributed on the front surface and crimped fiber groups unevenly distributed on the back surface, the cotton fiber groups are arranged substantially in the vertical direction of the face, the crimped fiber groups are arranged randomly, the cotton fiber groups are entangled with each other, the crimped fiber groups are entangled with each other, and the cotton fiber groups and the crimped fiber groups are entangled, and the face mask base fabric has higher elongation in the width direction of the face compared to the vertical direction of the face, and a method for manufacturing the same.

[0008] The face mask base fabric according to the present invention is made of a nonwoven fabric having cotton fiber groups distributed unevenly on the front surface and crimped fiber groups distributed unevenly on the back surface. Generally, the front surface is the surface that contacts the skin, but it is not interchangeable if the back surface is used in contact with the skin. If the front surface on which the hydrophilic cotton fiber groups are distributed unevenly is used as the surface that contacts the skin, it is possible to impregnate the cosmetic material in a larger amount and supply the cosmetic material to the skin in a larger amount. In addition, since the surface that contacts the skin is made of cotton fiber, which is a natural material, there is also the advantage that it is gentle on the skin.

[0009] By having more crimped fiber groups on the back surface, appropriate elasticity and extensibility are imparted. The crimped fiber generally has a spiral or zigzag shape, and this shape is deformed by an external force to realize appropriate elasticity and extensibility. As the crimped fiber, a conventionally known one is used. For example, a fiber formed of a thermoplastic resin can be mechanically processed by applying heat to the fiber to form a spiral or zigzag crimped fiber. In addition, by applying heat to a side-by-side type composite fiber or an unevenly distributed core-sheath type composite fiber made of two types of thermoplastic resins with different heat shrinkage rates, a spiral crimped fiber can be formed due to the difference in the heat shrinkage rates of the two types of thermoplastic resins. As the thermoplastic resin, a conventionally known one can be used, but generally, a thermoplastic resin selected from the group consisting of polyester resin, polyolefin resin, and polyamide resin is used. The fineness of the crimped fiber is about 1 to 10 decitex.

[0010] The cotton fiber groups distributed unevenly on the front surface are substantially arranged in the vertical direction of the face. This arrangement makes it difficult for the face mask base fabric to stretch in the vertical direction of the face. On the other hand, the crimped fiber groups distributed unevenly on the back surface are arranged randomly. When arranged randomly, there is no directionality in the stretchability or extensibility. However, in the face mask base fabric according to the present invention, the cotton fiber groups, the crimped fiber groups, and the cotton fiber groups and the crimped fiber groups are entangled with each other, so that it is difficult to stretch in the vertical direction of the face and easy to stretch in the width direction of the face.

[0011] The mass of the face mask base fabric according to the present invention is 50 to 150 g / m 2 The mass ratio of the cotton fiber group to the crimped fiber group is about 1:1.5 to 4:cotton fiber group:crimped fiber group. If the cotton fiber group is too small, the amount of cosmetic impregnated into the facial skin tends to decrease. On the other hand, if the cotton fiber group is too large, the elasticity and extensibility provided by the crimped fiber group decreases, and it tends to be difficult to provide appropriate elasticity and extensibility.

[0012] The face mask base fabric according to the present invention may have any shape, but in order to effectively exert the function of lifting the face line, it is preferable that the base fabric has a shape that covers the chin or the upper part of the face from under the chin. Specifically, it is preferable that the base fabric has a shape that covers from under the chin to the entire face, from under the chin to the cheeks, or from under the chin to the eyes.

[0013] The face mask base fabric according to the present invention can be obtained, for example, by the following manufacturing method, which includes the steps of: collecting cotton fibers substantially aligned in the machine direction to form a cotton fiber web, collecting crimped fibers randomly aligned to form a crimped fiber web, laminating the cotton fiber web and the crimped fiber web to form a laminated web, and applying a high-pressure water flow to the laminated web to entangle the cotton fiber groups with each other, the crimped fiber groups with each other, and the cotton fiber groups with the crimped fiber groups to form a nonwoven fabric.

[0014] To form a cotton fiber web, the cotton fibers are opened and stacked using a carding machine. In this case, the cotton fibers are arranged substantially in the machine direction (the flow direction in the manufacturing process, also called the MD direction. The direction perpendicular to the MD direction is also called the CD direction). This arrangement can be achieved, for example, by opening and stacking the cotton fibers using a flat carding machine as the carding machine. It can also be achieved by opening and stacking the cotton fibers using a roller carding machine, and then stretching them in the conveying direction (MD direction). The cotton fiber web has a basis weight of 15 to 40 g / m 2 It is preferable that the amount is about 100%.

[0015] To form a crimped fiber web, opened crimped fibers may be accumulated by air laying or random webber method. Since the crimped fibers are accumulated randomly, the crimped fibers in the crimped fiber web are arranged randomly and have no directionality and are generally isotropic. Cotton fibers may be mixed into the crimped fiber web. The mixing ratio is about 10 to 35% by mass. To form a crimped fiber web containing cotton fibers, opened crimped fibers and opened cotton fibers may be accumulated by air laying or random webber method. The basis weight of the crimped fiber web is 30 to 80 g / m. 2 It is preferable that the amount is about 100%.

[0016] The cotton fiber web and the crimped fiber web are laminated to form a laminated web. The basis weight of the laminated web is 40 to 120 g / m 2 It is preferable that the thickness of the web is about 100 mm. Then, a high-pressure water stream is applied to the laminated web, and the cotton fiber groups are entangled with each other, the crimped fiber groups are entangled with each other, and the cotton fiber groups and the crimped fiber groups are entangled. The high-pressure water stream may be applied from the cotton fiber web side or from the crimped fiber web side. It is preferable to apply the high-pressure water stream from both web sides in order to make the texture of the obtained face mask base fabric uniform. After applying the high-pressure water stream, the web is dried to remove water, and a nonwoven fabric is obtained.

[0017] This nonwoven fabric is punched into a predetermined shape to obtain a face mask base fabric. The face mask is then impregnated with a desired cosmetic and applied to the face to make it a face mask. When applying the face mask to the face, it is preferable to have the surface on which the cotton fiber groups are unevenly distributed contact the skin. The face mask is then applied while being stretched diagonally upward from the chin, thereby exerting a lifting function. Effect of the Invention

[0018] The face mask base fabric according to the present invention is made of a nonwoven fabric in which the cotton fiber groups distributed on the front side are arranged in the vertical direction of the face, and the crimped fiber groups distributed on the back side are arranged randomly, and both fiber groups are intertwined. Therefore, when the face mask is impregnated with a cosmetic agent, it can be attached to the face while stretching appropriately along the face line from the chin to the temples. Therefore, the use of the face mask base fabric according to the present invention has the effect of realizing a face line lifting function. EXAMPLES

[0019] Example 1 [Preparation of cotton fiber web] A cotton fiber group having an average fiber length of 25 mm is opened and accumulated using a flat carding machine, and the cotton fiber group is substantially aligned in the MD direction. The basis weight is 20 g / m 2 A cotton fiber web of 1000 g was prepared.

[0020] [Preparation of crimped fiber web] A polyester-based crimped fiber group having a fineness of 3.3 decitex and a fiber length of 51 mm and a spiral crimp is opened and accumulated by the air laying method, so that the crimped fiber group is randomly arranged. The basis weight is 45 g / m. 2 A crimped fiber web having the following structure was prepared. The crimped fiber was a side-by-side type composite fiber made of polyethylene terephthalate and polytetramethylene terephthalate.

[0021] A cotton fiber web and a crimped fiber web were laminated to obtain a laminated web. A high-pressure water stream with a jet pressure of 3 MPa was applied to this laminated web from the cotton fiber web side, and then a high-pressure water stream with a jet pressure of 6 MPa was applied. Next, a high-pressure water stream with a jet pressure of 6 MPa was applied to the crimped fiber web side, and the web was heated at 120°C for 120 seconds to evaporate the water, resulting in a basis weight of 65 g / m. 2The nonwoven fabric was obtained. The high-pressure water stream was sprayed using a high-pressure water stream spraying device with a row of nozzles with a diameter of 0.1 mm and a hole interval of 0.6 mm arranged in a horizontal line (a row in the width direction of the laminated web). The nonwoven fabric was punched out so that the MD direction, which is the arrangement direction of the cotton fiber groups in the obtained nonwoven fabric, was aligned with the up-down direction of the face, to obtain a face mask base fabric of a predetermined shape.

[0022] Example 2 The weight of the cotton fiber web is 27 g / m 2 The basis weight of the crimped fiber web was changed to 43 g / m 2 The same method as in Example 1 was used except for changing the basis weight to 70 g / m 2 A nonwoven fabric and a face mask base fabric were obtained.

[0023] Example 3 The same method as in Example 1 was used except that the following crimped fiber web was used instead of the crimped fiber web used in Example 1, and a basis weight of 80 g / m was obtained. 2 A nonwoven fabric and a face mask base fabric were obtained. [Preparation of crimped fiber web] A mixed fiber group consisting of 75% by mass of the polyester-based crimped fiber group used in Example 1 and 25% by mass of the cotton fiber group used in Example 1 was opened and accumulated by air laying, so that the crimped fiber group and the cotton fiber group were randomly arranged, and the basis weight was 60 g / m 2 A crimped fiber web of 1000 g was prepared.

[0024] Test pieces 5 cm wide and 15 cm long were taken from the nonwoven fabrics obtained in Examples 1 to 3, and the mechanical properties in the MD and CD directions were measured without treatment and after water impregnation treatment. The mechanical properties were as shown in Table 1. For the mechanical properties after water impregnation treatment, the test pieces were immersed in water for 5 minutes, then taken out and hung for 3 minutes, and then measured. When measuring the mechanical properties in the MD direction, the length direction of the test pieces was set to the MD direction, and when measuring the mechanical properties in the CD direction, the length direction of the test pieces was set to the CD direction.

[0025] [Table 1] ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Example 1 Example 2 Example 3 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Stress at 5% elongation (N / 5cm) Without processing MD direction 1.4 1.6 1.5 CD direction 0.4 0.6 0.7 During water treatment MD direction 1.3 0.6 0.8 CD direction 0.4 0.4 0.5 Stress at 10% elongation (N / 5cm) Without processing MD direction 2.5 2.8 2.8 CD direction 0.6 1.0 1.1 During water treatment MD direction 2.7 1.0 1.6 CD direction 0.5 0.5 0.7 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Tensile strength (N / 5cm) Without processing MD direction 11.4 11.3 10.4 CD 5.1 7.0 16.7 During water treatment MD direction 23.3 11.5 31.3 CD 7.7 6.9 24.5 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Tensile elongation (%) Without processing MD direction 44.7 47.8 53.6 CD direction 120.8 106.7 120.6 During water treatment MD direction 50.1 70.7 87.5 CD direction 117.3 111.2 107.8 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

[0026] As can be seen from the results in Table 1, even when the face mask base fabric obtained in the examples was impregnated with a liquid (cosmetic), it was easily stretched in the CD direction (width direction of the face).

Claims

1. A face mask base fabric made of a nonwoven fabric having a cotton fiber group unevenly distributed on a front surface and a crimped fiber group unevenly distributed on a back surface, The cotton fibers are arranged substantially in the vertical direction of the face, and the crimped fibers are arranged randomly. The cotton fiber groups are entangled with each other, the crimped fiber groups are entangled with each other, and the cotton fiber groups and the crimped fiber groups are entangled with each other, A face mask base fabric that has higher stretchability in the width direction of the face compared to the vertical direction of the face.

2. The face mask base fabric according to claim 1, wherein the surface is the surface that comes into contact with the skin.

3. 2. The face mask base fabric according to claim 1, wherein the crimped fibers are formed from a thermoplastic resin selected from the group consisting of polyester resins, polyolefin resins and polyamide resins.

4. 2. The face mask base fabric according to claim 1, wherein the crimped fibers have a spiral crimp form.

5. 2. The face mask base fabric according to claim 1, which is punched into a shape that covers the upper part of the face from the chin or under the chin.

6. A face mask comprising the face mask base fabric according to claim 1 impregnated with a cosmetic material.

7. collecting the cotton fibers substantially aligned in the machine direction to form a cotton fiber web; A step of collecting the randomly arranged crimped fibers to form a crimped fiber web; laminating the cotton fiber web and the crimped fiber web to form a laminated web; and applying a high-pressure water flow to the laminated web to entangle the cotton fiber groups with each other, the crimped fiber groups with each other, and the cotton fiber groups and the crimped fiber groups to form a nonwoven fabric.

8. The method for producing a face mask base fabric according to claim 7, wherein cotton fibers are mixed in the crimped fiber web.

9. A method for manufacturing a face mask base fabric as described in claim 7, wherein the process for forming a cotton fiber web is a process for opening and stacking cotton fiber groups using a flat carding machine.

10. A method for manufacturing a face mask base fabric as described in claim 7, wherein the step of forming a cotton fiber web is a step of opening and stacking cotton fiber groups using a roller carding machine, and then stretching the cotton fiber groups in the machine direction.